摘要
The neutron Bragg-edge imaging is expected to be a new non-destructive energy-resolved neutron imaging technique for quantitatively two-dimensional or three-dimensional visualizing crystallographic information in a bulk material,which could be benefited from pulsed neutron source.Here we build a Bragg-edge imaging system on the General Purpose Powder Diffractometer at the China Spallation Neutron Source.The residual strain mapping of a bent Q235 ferrite steel sample has been achieved with a spectral resolution of 0.15%by the time-of-flight neutron Bragg-edge imaging on this system.The results show its great potential applications in materials science and engineering.
作者
陈洁
谭志坚
刘玮强
邓司浩
王声翔
王立毅
郑海彪
卢怀乐
沈斐然
郝嘉政
周晓娟
周健荣
孙志嘉
何伦华
梁天骄
Jie Chen;Zhijian Tan;Weiqiang Liu;Sihao Deng;Shengxiang Wang;Liyi Wang;Haibiao Zheng;Huaile Lu;Feiran Shen;Jiazheng Hao;Xiaojuan Zhou;Jianrong Zhou;Zhijia Sun;Lunhua He;Tianjiao Liang(Institute of High Energy Physics,Chinese Academy of Sciences(CAS),Beijing 100049,China;Spallation Neutron Source Science Center(SNSSC),Dongguan 523803,China;Beijing National Laboratory for Condensed Matter Physics,Institute of Physics,Chinese Academy of Sciences,Beijing 100190,China;University of Chinese Academy of Sciences,Beijing 100049,China)
基金
Project supported by the National Key Research and Development Program of China(Grant Nos.2017YFB0701903 and 2016YFA0401502)
the National Natural Science Foundation of China(Grant No.12041202)
the Youth Innovation Promotion Association of Chinese Academy of Sciences(Grant No.2017023)
the Guangdong Natural Science Foundation,China(Grant No.2016A030313129)
the Department of Science and Technology of Guangdong Province under grant project of energy-resolved neutron imaging instrument.
